java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-tiling/poly2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:07,454 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:07,456 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:07,468 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:07,469 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:07,470 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:07,471 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:07,473 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:07,475 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:07,476 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:07,477 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:07,478 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:07,479 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:07,480 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:07,481 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:07,482 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:07,483 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:07,485 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:07,488 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:07,489 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:07,491 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:07,492 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:07,495 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:07,496 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:07,496 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:07,497 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:07,498 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:07,499 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:07,499 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:07,500 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:07,501 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:07,502 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:07,504 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:07,504 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:07,505 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:07,505 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:07,506 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:07,507 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:07,508 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:07,508 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:07,523 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:07,523 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:07,525 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:07,525 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:07,525 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:07,526 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:07,526 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:07,526 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:07,526 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:07,526 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:07,527 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:07,527 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:07,527 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:07,527 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:07,527 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:07,528 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:07,528 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:07,528 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:07,528 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:07,529 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:07,529 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:07,529 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:07,529 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:07,529 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:07,530 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:07,530 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:07,530 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:07,530 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:07,530 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:26:07,563 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:07,576 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:07,581 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:07,583 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:07,583 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:07,584 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/poly2_true-unreach-call.i [2019-05-23 11:26:07,652 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c45569b/cd807101749b40f8a0efa363bca8cd4b/FLAGf8fc931fc [2019-05-23 11:26:08,084 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:08,085 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/poly2_true-unreach-call.i [2019-05-23 11:26:08,090 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c45569b/cd807101749b40f8a0efa363bca8cd4b/FLAGf8fc931fc [2019-05-23 11:26:08,462 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c45569b/cd807101749b40f8a0efa363bca8cd4b [2019-05-23 11:26:08,473 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:08,475 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:08,476 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:08,476 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:08,480 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:08,483 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,488 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20333ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08, skipping insertion in model container [2019-05-23 11:26:08,488 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,496 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:08,516 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:08,696 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:08,701 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:08,726 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:08,748 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:08,748 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08 WrapperNode [2019-05-23 11:26:08,749 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:08,750 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:08,750 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:08,750 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:08,760 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,778 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,804 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:08,805 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:08,805 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:08,805 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:08,815 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,815 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,818 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,820 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,836 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,844 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,845 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... [2019-05-23 11:26:08,847 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:08,848 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:08,848 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:08,848 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:08,849 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:26:08,987 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:08,987 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:08,987 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:08,988 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:08,988 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:08,988 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:09,426 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:09,427 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:26:09,428 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:09 BoogieIcfgContainer [2019-05-23 11:26:09,428 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:09,429 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:09,429 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:09,432 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:09,433 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:08" (1/3) ... [2019-05-23 11:26:09,434 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ab499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:09, skipping insertion in model container [2019-05-23 11:26:09,434 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:08" (2/3) ... [2019-05-23 11:26:09,434 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ab499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:09, skipping insertion in model container [2019-05-23 11:26:09,434 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:09" (3/3) ... [2019-05-23 11:26:09,436 INFO L146 ILogger]: Analyzing ICFG poly2_true-unreach-call.i [2019-05-23 11:26:09,446 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:09,454 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:09,471 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:09,502 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:09,503 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:09,503 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:09,503 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:09,503 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:09,503 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:09,504 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:09,504 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:09,504 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:09,520 INFO L146 ILogger]: Start isEmpty. Operand 44 states. [2019-05-23 11:26:09,526 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:26:09,527 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:09,528 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:09,530 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:09,536 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:09,536 INFO L146 ILogger]: Analyzing trace with hash -935793367, now seen corresponding path program 1 times [2019-05-23 11:26:09,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:09,539 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:09,582 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,583 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:09,583 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,618 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:09,655 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:09,658 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:09,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:09,661 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:09,672 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:09,673 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:09,674 INFO L146 ILogger]: Start difference. First operand 44 states. Second operand 2 states. [2019-05-23 11:26:09,693 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:09,693 INFO L146 ILogger]: Finished difference Result 71 states and 82 transitions. [2019-05-23 11:26:09,693 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:09,695 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:26:09,695 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:09,705 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:26:09,705 INFO L146 ILogger]: Without dead ends: 38 [2019-05-23 11:26:09,708 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:09,723 INFO L146 ILogger]: Start minimizeSevpa. Operand 38 states. [2019-05-23 11:26:09,739 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-05-23 11:26:09,740 INFO L146 ILogger]: Start removeUnreachable. Operand 38 states. [2019-05-23 11:26:09,741 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-05-23 11:26:09,743 INFO L146 ILogger]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 23 [2019-05-23 11:26:09,743 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:09,743 INFO L146 ILogger]: Abstraction has 38 states and 40 transitions. [2019-05-23 11:26:09,743 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:09,744 INFO L146 ILogger]: Start isEmpty. Operand 38 states and 40 transitions. [2019-05-23 11:26:09,745 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:26:09,745 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:09,745 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:09,745 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:09,746 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:09,746 INFO L146 ILogger]: Analyzing trace with hash 1766336542, now seen corresponding path program 1 times [2019-05-23 11:26:09,746 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:09,746 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:09,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,748 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:09,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,773 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:09,773 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:09,774 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:09,784 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:09,805 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:09,807 INFO L146 ILogger]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:26:09,813 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:10,040 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:10,073 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:10,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:10,076 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:10,077 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:10,077 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:10,078 INFO L146 ILogger]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2019-05-23 11:26:10,446 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:10,446 INFO L146 ILogger]: Finished difference Result 80 states and 85 transitions. [2019-05-23 11:26:10,446 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:10,447 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 23 [2019-05-23 11:26:10,447 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:10,448 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:26:10,448 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:26:10,450 INFO L146 ILogger]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:10,450 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:26:10,456 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 40. [2019-05-23 11:26:10,457 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:26:10,458 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:26:10,458 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 23 [2019-05-23 11:26:10,459 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:10,459 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:26:10,459 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:10,459 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:26:10,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:26:10,461 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:10,461 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:10,461 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:10,462 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:10,462 INFO L146 ILogger]: Analyzing trace with hash 729744354, now seen corresponding path program 1 times [2019-05-23 11:26:10,462 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:10,462 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:10,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,464 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:10,464 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,472 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:10,473 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:10,473 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:10,492 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:10,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,532 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:10,537 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:10,723 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:26:10,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:10,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:26:10,746 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:26:10,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:26:10,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:26:10,749 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 6 states. [2019-05-23 11:26:11,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:11,072 INFO L146 ILogger]: Finished difference Result 86 states and 90 transitions. [2019-05-23 11:26:11,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:26:11,073 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 35 [2019-05-23 11:26:11,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:11,074 INFO L146 ILogger]: With dead ends: 86 [2019-05-23 11:26:11,075 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:26:11,075 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:26:11,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:26:11,081 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 45. [2019-05-23 11:26:11,081 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:26:11,082 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2019-05-23 11:26:11,083 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 35 [2019-05-23 11:26:11,083 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:11,083 INFO L146 ILogger]: Abstraction has 45 states and 47 transitions. [2019-05-23 11:26:11,083 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:26:11,083 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 47 transitions. [2019-05-23 11:26:11,085 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:26:11,085 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:11,086 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:11,086 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:11,086 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:11,086 INFO L146 ILogger]: Analyzing trace with hash 363252505, now seen corresponding path program 2 times [2019-05-23 11:26:11,086 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:11,086 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:11,087 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,088 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:11,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,095 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:11,096 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:11,096 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:11,109 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:11,128 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:11,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,130 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:11,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:11,211 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:26:11,240 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:11,240 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:26:11,241 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:26:11,241 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:26:11,241 INFO L146 ILogger]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:26:11,242 INFO L146 ILogger]: Start difference. First operand 45 states and 47 transitions. Second operand 6 states. [2019-05-23 11:26:11,746 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:26:11,839 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:11,839 INFO L146 ILogger]: Finished difference Result 81 states and 84 transitions. [2019-05-23 11:26:11,840 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:26:11,840 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 40 [2019-05-23 11:26:11,840 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:11,842 INFO L146 ILogger]: With dead ends: 81 [2019-05-23 11:26:11,842 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:26:11,843 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:26:11,844 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:26:11,848 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-05-23 11:26:11,849 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:26:11,849 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2019-05-23 11:26:11,850 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 40 [2019-05-23 11:26:11,850 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:11,850 INFO L146 ILogger]: Abstraction has 52 states and 54 transitions. [2019-05-23 11:26:11,850 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:26:11,850 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 54 transitions. [2019-05-23 11:26:11,851 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:26:11,852 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:11,852 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:11,852 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:11,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:11,853 INFO L146 ILogger]: Analyzing trace with hash -1171993058, now seen corresponding path program 3 times [2019-05-23 11:26:11,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:11,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:11,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,854 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:11,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,861 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:11,861 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:11,861 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:11,872 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:11,908 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:11,908 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,909 INFO L146 ILogger]: Trace formula consists of 79 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:26:11,912 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:12,003 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2019-05-23 11:26:12,003 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,239 WARN L146 ILogger]: Spent 235.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2019-05-23 11:26:12,240 INFO L146 ILogger]: treesize reduction 38, result has 35.6 percent of original size [2019-05-23 11:26:12,240 INFO L146 ILogger]: Eliminatee |v_#memory_int_7| vanished before elimination [2019-05-23 11:26:12,241 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,241 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:21 [2019-05-23 11:26:12,350 INFO L146 ILogger]: treesize reduction 21, result has 25.0 percent of original size [2019-05-23 11:26:12,351 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2019-05-23 11:26:12,353 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,357 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,357 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,358 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-05-23 11:26:12,614 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2019-05-23 11:26:12,631 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:12,632 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,771 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2019-05-23 11:26:12,771 INFO L146 ILogger]: treesize reduction 10, result has 91.9 percent of original size [2019-05-23 11:26:12,772 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 142 [2019-05-23 11:26:12,774 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,808 INFO L146 ILogger]: treesize reduction 133, result has 17.4 percent of original size [2019-05-23 11:26:12,809 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,809 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:111, output treesize:28 [2019-05-23 11:26:12,933 INFO L146 ILogger]: treesize reduction 33, result has 17.5 percent of original size [2019-05-23 11:26:12,934 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 25 [2019-05-23 11:26:12,935 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,942 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,943 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,943 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:7 [2019-05-23 11:26:13,014 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:13,015 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:13,017 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2019-05-23 11:26:13,017 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,019 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:13,019 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,030 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:13,031 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,031 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:61, output treesize:7 [2019-05-23 11:26:13,095 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:13,124 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:13,124 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 11:26:13,125 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:26:13,125 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:26:13,128 INFO L146 ILogger]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:26:13,128 INFO L146 ILogger]: Start difference. First operand 52 states and 54 transitions. Second operand 17 states. [2019-05-23 11:26:14,396 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:14,397 INFO L146 ILogger]: Finished difference Result 116 states and 120 transitions. [2019-05-23 11:26:14,397 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:26:14,398 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 47 [2019-05-23 11:26:14,398 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:14,399 INFO L146 ILogger]: With dead ends: 116 [2019-05-23 11:26:14,399 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:26:14,400 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:26:14,400 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:26:14,411 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 80. [2019-05-23 11:26:14,412 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:26:14,413 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2019-05-23 11:26:14,413 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 47 [2019-05-23 11:26:14,413 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:14,413 INFO L146 ILogger]: Abstraction has 80 states and 84 transitions. [2019-05-23 11:26:14,414 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:26:14,414 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 84 transitions. [2019-05-23 11:26:14,414 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:26:14,414 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:14,416 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:14,416 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:14,416 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:14,416 INFO L146 ILogger]: Analyzing trace with hash -1174373675, now seen corresponding path program 4 times [2019-05-23 11:26:14,416 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:14,417 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:14,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:14,419 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:14,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:14,431 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:14,431 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:14,432 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:14,449 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:14,475 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:14,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:14,476 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:14,481 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:14,618 INFO L146 ILogger]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:14,638 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:14,638 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:26:14,639 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:26:14,639 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:26:14,639 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:26:14,639 INFO L146 ILogger]: Start difference. First operand 80 states and 84 transitions. Second operand 13 states. [2019-05-23 11:26:15,064 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:15,065 INFO L146 ILogger]: Finished difference Result 147 states and 153 transitions. [2019-05-23 11:26:15,065 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:26:15,065 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 52 [2019-05-23 11:26:15,066 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:15,067 INFO L146 ILogger]: With dead ends: 147 [2019-05-23 11:26:15,067 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:26:15,068 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:26:15,069 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:26:15,078 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 87. [2019-05-23 11:26:15,078 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:26:15,079 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2019-05-23 11:26:15,079 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 52 [2019-05-23 11:26:15,079 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:15,079 INFO L146 ILogger]: Abstraction has 87 states and 91 transitions. [2019-05-23 11:26:15,080 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:26:15,080 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 91 transitions. [2019-05-23 11:26:15,081 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:26:15,081 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:15,081 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:15,081 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:15,082 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:15,082 INFO L146 ILogger]: Analyzing trace with hash 1456687993, now seen corresponding path program 5 times [2019-05-23 11:26:15,082 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:15,082 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:15,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,083 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:15,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,092 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:15,092 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:15,093 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:15,106 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:19,162 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:26:19,162 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,163 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:19,165 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:19,321 INFO L146 ILogger]: Checked inductivity of 31 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:19,339 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:19,339 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:26:19,340 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:26:19,340 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:26:19,340 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:26:19,340 INFO L146 ILogger]: Start difference. First operand 87 states and 91 transitions. Second operand 13 states. [2019-05-23 11:26:19,750 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:19,750 INFO L146 ILogger]: Finished difference Result 136 states and 141 transitions. [2019-05-23 11:26:19,750 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:26:19,751 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 54 [2019-05-23 11:26:19,751 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:19,752 INFO L146 ILogger]: With dead ends: 136 [2019-05-23 11:26:19,753 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:26:19,754 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:19,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:26:19,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 87. [2019-05-23 11:26:19,764 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:26:19,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-05-23 11:26:19,765 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 54 [2019-05-23 11:26:19,766 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:19,766 INFO L146 ILogger]: Abstraction has 87 states and 90 transitions. [2019-05-23 11:26:19,766 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:26:19,766 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 90 transitions. [2019-05-23 11:26:19,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:26:19,767 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:19,768 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:19,768 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:19,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:19,768 INFO L146 ILogger]: Analyzing trace with hash 790235857, now seen corresponding path program 1 times [2019-05-23 11:26:19,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:19,768 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:19,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:19,769 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:19,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:19,775 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:19,775 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:19,775 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:19,789 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:19,820 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,821 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:26:19,825 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:20,076 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:20,077 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,104 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,104 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,104 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-05-23 11:26:20,446 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:20,455 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2019-05-23 11:26:20,456 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,459 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:20,459 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,473 INFO L146 ILogger]: treesize reduction 5, result has 84.8 percent of original size [2019-05-23 11:26:20,474 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,474 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:103, output treesize:13 [2019-05-23 11:26:20,562 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-05-23 11:26:20,562 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,570 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,570 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,571 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:9 [2019-05-23 11:26:20,834 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2019-05-23 11:26:21,366 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,367 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:21,370 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:21,372 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2019-05-23 11:26:21,372 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,386 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:21,386 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,395 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:21,395 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,396 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2019-05-23 11:26:21,464 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,482 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:21,482 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2019-05-23 11:26:21,483 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:26:21,483 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:26:21,484 INFO L146 ILogger]: CoverageRelationStatistics Valid=70, Invalid=390, Unknown=2, NotChecked=0, Total=462 [2019-05-23 11:26:21,484 INFO L146 ILogger]: Start difference. First operand 87 states and 90 transitions. Second operand 22 states. [2019-05-23 11:26:22,583 WARN L146 ILogger]: Spent 184.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2019-05-23 11:26:22,863 WARN L146 ILogger]: Spent 178.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-05-23 11:26:23,015 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2019-05-23 11:26:23,991 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:23,992 INFO L146 ILogger]: Finished difference Result 131 states and 134 transitions. [2019-05-23 11:26:23,992 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:26:23,992 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 57 [2019-05-23 11:26:23,993 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:23,994 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:26:23,994 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:26:23,995 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=219, Invalid=1328, Unknown=13, NotChecked=0, Total=1560 [2019-05-23 11:26:23,996 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:26:24,001 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 97. [2019-05-23 11:26:24,002 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:26:24,002 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2019-05-23 11:26:24,002 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 57 [2019-05-23 11:26:24,003 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:24,003 INFO L146 ILogger]: Abstraction has 97 states and 100 transitions. [2019-05-23 11:26:24,003 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:26:24,003 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 100 transitions. [2019-05-23 11:26:24,004 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:26:24,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:24,005 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:24,005 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:24,005 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:24,005 INFO L146 ILogger]: Analyzing trace with hash 1723151074, now seen corresponding path program 6 times [2019-05-23 11:26:24,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:24,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:24,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,007 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:24,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,013 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:24,014 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:24,014 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:24,025 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:24,073 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:26:24,073 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,075 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:26:24,078 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:24,117 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2019-05-23 11:26:24,117 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,235 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2019-05-23 11:26:24,235 INFO L146 ILogger]: treesize reduction 41, result has 36.9 percent of original size [2019-05-23 11:26:24,236 INFO L146 ILogger]: Eliminatee |v_#memory_int_14| vanished before elimination [2019-05-23 11:26:24,236 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,236 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:24 [2019-05-23 11:26:24,365 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:24,365 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,418 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,419 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2019-05-23 11:26:24,420 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,544 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2019-05-23 11:26:24,545 INFO L146 ILogger]: treesize reduction 5, result has 86.1 percent of original size [2019-05-23 11:26:24,546 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,546 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:83, output treesize:31 [2019-05-23 11:26:24,622 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,623 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,624 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,625 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,626 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2019-05-23 11:26:24,626 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,634 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,635 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,635 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-05-23 11:26:24,779 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:24,779 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,830 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,842 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,845 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:24,847 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,851 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,852 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 66 [2019-05-23 11:26:24,852 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,876 INFO L146 ILogger]: treesize reduction 12, result has 76.0 percent of original size [2019-05-23 11:26:24,877 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,877 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:135, output treesize:38 [2019-05-23 11:26:25,033 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:25,033 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,037 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:25,038 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:25,039 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:25,043 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:25,044 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,044 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 63 [2019-05-23 11:26:25,045 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,067 INFO L146 ILogger]: treesize reduction 20, result has 63.0 percent of original size [2019-05-23 11:26:25,067 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,068 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:115, output treesize:23 [2019-05-23 11:26:25,210 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:25,211 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,211 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2019-05-23 11:26:25,212 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,219 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,220 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,220 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:20 [2019-05-23 11:26:25,318 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:25,318 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,323 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:25,325 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,325 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 21 [2019-05-23 11:26:25,325 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,337 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:25,338 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,338 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:7 [2019-05-23 11:26:25,398 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:25,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:25,418 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2019-05-23 11:26:25,419 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:26:25,419 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:26:25,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:25,420 INFO L146 ILogger]: Start difference. First operand 97 states and 100 transitions. Second operand 25 states. [2019-05-23 11:26:27,320 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:27,321 INFO L146 ILogger]: Finished difference Result 168 states and 173 transitions. [2019-05-23 11:26:27,321 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:26:27,321 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 59 [2019-05-23 11:26:27,321 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:27,323 INFO L146 ILogger]: With dead ends: 168 [2019-05-23 11:26:27,323 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:26:27,324 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:27,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:26:27,332 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 126. [2019-05-23 11:26:27,333 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:26:27,333 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2019-05-23 11:26:27,333 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 59 [2019-05-23 11:26:27,334 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:27,334 INFO L146 ILogger]: Abstraction has 126 states and 131 transitions. [2019-05-23 11:26:27,334 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:26:27,334 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 131 transitions. [2019-05-23 11:26:27,335 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:26:27,335 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,336 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:27,336 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,336 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,336 INFO L146 ILogger]: Analyzing trace with hash -31947495, now seen corresponding path program 7 times [2019-05-23 11:26:27,336 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,337 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,337 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,338 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:27,338 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,343 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:27,343 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:27,343 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:27,366 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:27,386 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,387 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:27,389 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:27,545 INFO L146 ILogger]: Checked inductivity of 58 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:27,568 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:27,568 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 11:26:27,568 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:26:27,568 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:26:27,569 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:26:27,569 INFO L146 ILogger]: Start difference. First operand 126 states and 131 transitions. Second operand 17 states. [2019-05-23 11:26:28,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,544 INFO L146 ILogger]: Finished difference Result 199 states and 206 transitions. [2019-05-23 11:26:28,544 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:26:28,545 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 64 [2019-05-23 11:26:28,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,546 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:26:28,546 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:26:28,547 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:26:28,548 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:26:28,554 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 133. [2019-05-23 11:26:28,554 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:26:28,555 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2019-05-23 11:26:28,555 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 64 [2019-05-23 11:26:28,556 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,556 INFO L146 ILogger]: Abstraction has 133 states and 138 transitions. [2019-05-23 11:26:28,556 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:26:28,556 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 138 transitions. [2019-05-23 11:26:28,557 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:26:28,557 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,558 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,558 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,558 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,558 INFO L146 ILogger]: Analyzing trace with hash -433012171, now seen corresponding path program 8 times [2019-05-23 11:26:28,559 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,559 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,560 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,567 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:28,568 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:28,568 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:28,583 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:28,606 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:28,606 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,607 INFO L146 ILogger]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:28,609 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:28,815 INFO L146 ILogger]: Checked inductivity of 64 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:28,834 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:28,834 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 11:26:28,835 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:26:28,835 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:26:28,835 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:26:28,836 INFO L146 ILogger]: Start difference. First operand 133 states and 138 transitions. Second operand 17 states. [2019-05-23 11:26:29,614 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:29,614 INFO L146 ILogger]: Finished difference Result 188 states and 194 transitions. [2019-05-23 11:26:29,615 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:26:29,615 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 66 [2019-05-23 11:26:29,615 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:29,616 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:26:29,617 INFO L146 ILogger]: Without dead ends: 168 [2019-05-23 11:26:29,618 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:26:29,618 INFO L146 ILogger]: Start minimizeSevpa. Operand 168 states. [2019-05-23 11:26:29,623 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 168 to 133. [2019-05-23 11:26:29,623 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:26:29,624 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2019-05-23 11:26:29,624 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 66 [2019-05-23 11:26:29,624 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:29,624 INFO L146 ILogger]: Abstraction has 133 states and 137 transitions. [2019-05-23 11:26:29,625 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:26:29,625 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 137 transitions. [2019-05-23 11:26:29,625 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:26:29,626 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:29,626 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:29,626 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:29,626 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:29,626 INFO L146 ILogger]: Analyzing trace with hash 1805468612, now seen corresponding path program 2 times [2019-05-23 11:26:29,627 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:29,627 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:29,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,628 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:29,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,632 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:29,633 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:29,633 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:29,646 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:29,665 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:29,665 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,666 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:29,667 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:29,779 INFO L146 ILogger]: Checked inductivity of 38 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:26:29,797 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:29,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:26:29,798 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:26:29,798 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:26:29,799 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:26:29,799 INFO L146 ILogger]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2019-05-23 11:26:30,096 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:30,097 INFO L146 ILogger]: Finished difference Result 167 states and 171 transitions. [2019-05-23 11:26:30,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:26:30,098 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 67 [2019-05-23 11:26:30,099 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:30,100 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:26:30,100 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:26:30,100 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:30,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:26:30,104 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 106. [2019-05-23 11:26:30,104 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:26:30,105 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2019-05-23 11:26:30,105 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 67 [2019-05-23 11:26:30,105 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:30,105 INFO L146 ILogger]: Abstraction has 106 states and 109 transitions. [2019-05-23 11:26:30,105 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:26:30,105 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 109 transitions. [2019-05-23 11:26:30,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:26:30,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:30,106 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:30,106 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:30,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:30,107 INFO L146 ILogger]: Analyzing trace with hash -1131001195, now seen corresponding path program 3 times [2019-05-23 11:26:30,107 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:30,107 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:30,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:30,108 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:30,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:30,114 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:30,115 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:30,115 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:30,138 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:30,305 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:30,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:30,307 INFO L146 ILogger]: Trace formula consists of 111 conjuncts, 54 conjunts are in the unsatisfiable core [2019-05-23 11:26:30,308 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:30,372 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2019-05-23 11:26:30,372 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,406 INFO L146 ILogger]: treesize reduction 44, result has 38.0 percent of original size [2019-05-23 11:26:30,407 INFO L146 ILogger]: Eliminatee |v_#memory_int_20| vanished before elimination [2019-05-23 11:26:30,407 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,407 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:27 [2019-05-23 11:26:30,483 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,486 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2019-05-23 11:26:30,487 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,490 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:30,491 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,511 INFO L146 ILogger]: treesize reduction 5, result has 87.8 percent of original size [2019-05-23 11:26:30,511 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,512 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:93, output treesize:36 [2019-05-23 11:26:30,668 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,669 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,670 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,680 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-05-23 11:26:30,681 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,684 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:30,684 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,710 INFO L146 ILogger]: treesize reduction 5, result has 89.6 percent of original size [2019-05-23 11:26:30,710 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,711 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:28 [2019-05-23 11:26:30,826 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:30,826 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,914 INFO L146 ILogger]: treesize reduction 12, result has 91.1 percent of original size [2019-05-23 11:26:30,915 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 158 [2019-05-23 11:26:30,916 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,963 INFO L146 ILogger]: treesize reduction 143, result has 19.2 percent of original size [2019-05-23 11:26:30,963 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,964 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:127, output treesize:34 [2019-05-23 11:26:31,086 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:31,086 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,147 INFO L146 ILogger]: treesize reduction 12, result has 88.3 percent of original size [2019-05-23 11:26:31,148 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 126 [2019-05-23 11:26:31,148 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,180 INFO L146 ILogger]: treesize reduction 86, result has 28.3 percent of original size [2019-05-23 11:26:31,181 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,181 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:19 [2019-05-23 11:26:31,340 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:31,340 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,345 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,346 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2019-05-23 11:26:31,347 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,355 INFO L146 ILogger]: treesize reduction 18, result has 28.0 percent of original size [2019-05-23 11:26:31,355 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,355 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:65, output treesize:7 [2019-05-23 11:26:31,424 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:31,444 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:31,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2019-05-23 11:26:31,445 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:26:31,445 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:26:31,445 INFO L146 ILogger]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:31,445 INFO L146 ILogger]: Start difference. First operand 106 states and 109 transitions. Second operand 33 states. [2019-05-23 11:26:33,037 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:33,037 INFO L146 ILogger]: Finished difference Result 150 states and 153 transitions. [2019-05-23 11:26:33,037 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:26:33,038 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 69 [2019-05-23 11:26:33,038 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:33,039 INFO L146 ILogger]: With dead ends: 150 [2019-05-23 11:26:33,039 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:26:33,040 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=384, Invalid=2922, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:26:33,041 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:26:33,044 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 116. [2019-05-23 11:26:33,045 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:26:33,045 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2019-05-23 11:26:33,045 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 69 [2019-05-23 11:26:33,046 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:33,046 INFO L146 ILogger]: Abstraction has 116 states and 119 transitions. [2019-05-23 11:26:33,046 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:26:33,046 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 119 transitions. [2019-05-23 11:26:33,047 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:26:33,047 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:33,047 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:33,047 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:33,047 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:33,048 INFO L146 ILogger]: Analyzing trace with hash 992859166, now seen corresponding path program 9 times [2019-05-23 11:26:33,048 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:33,048 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:33,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:33,049 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:33,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:33,054 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:33,054 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:33,054 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:33,077 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:33,455 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:26:33,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:33,457 WARN L146 ILogger]: Trace formula consists of 113 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:26:33,459 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:33,513 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:33,514 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,692 WARN L146 ILogger]: Spent 177.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2019-05-23 11:26:33,692 INFO L146 ILogger]: treesize reduction 5, result has 87.2 percent of original size [2019-05-23 11:26:33,695 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-05-23 11:26:33,695 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,751 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:33,751 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,751 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:81, output treesize:30 [2019-05-23 11:26:33,842 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:33,847 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2019-05-23 11:26:33,848 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,851 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:33,851 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,874 INFO L146 ILogger]: treesize reduction 5, result has 88.1 percent of original size [2019-05-23 11:26:33,875 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,875 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:95, output treesize:37 [2019-05-23 11:26:33,951 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:33,952 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,955 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:33,956 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:33,957 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:33,958 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:33,959 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2019-05-23 11:26:33,959 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,987 INFO L146 ILogger]: treesize reduction 5, result has 90.2 percent of original size [2019-05-23 11:26:33,988 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:33,988 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:113, output treesize:46 [2019-05-23 11:26:34,267 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,269 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,271 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,273 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,275 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,277 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,300 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2019-05-23 11:26:34,300 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,312 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:34,312 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,352 INFO L146 ILogger]: treesize reduction 5, result has 91.7 percent of original size [2019-05-23 11:26:34,353 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,353 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:131, output treesize:55 [2019-05-23 11:26:34,763 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,764 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,765 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,766 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,767 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,768 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,769 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,770 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:34,771 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,785 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:34,787 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,791 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 72 [2019-05-23 11:26:34,791 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,795 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:34,796 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,828 INFO L146 ILogger]: treesize reduction 5, result has 91.4 percent of original size [2019-05-23 11:26:34,828 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:34,828 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:165, output treesize:53 [2019-05-23 11:26:34,980 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,981 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,982 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,983 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,984 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,985 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:34,986 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:34,987 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,006 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2019-05-23 11:26:35,007 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,015 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:35,015 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,050 INFO L146 ILogger]: treesize reduction 5, result has 91.4 percent of original size [2019-05-23 11:26:35,051 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,051 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:38 [2019-05-23 11:26:35,192 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,193 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,194 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:35,195 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,208 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2019-05-23 11:26:35,208 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,211 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:35,211 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,238 INFO L146 ILogger]: treesize reduction 5, result has 89.8 percent of original size [2019-05-23 11:26:35,239 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,239 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:29 [2019-05-23 11:26:35,507 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,509 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:35,509 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:35,517 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2019-05-23 11:26:35,518 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,521 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:35,521 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,544 INFO L146 ILogger]: treesize reduction 5, result has 87.5 percent of original size [2019-05-23 11:26:35,544 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,545 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:109, output treesize:20 [2019-05-23 11:26:35,848 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:35,848 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,850 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:35,852 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:35,852 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 18 [2019-05-23 11:26:35,853 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,862 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:35,862 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:35,863 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:58, output treesize:7 [2019-05-23 11:26:35,948 INFO L146 ILogger]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:35,967 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:35,967 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2019-05-23 11:26:35,967 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:35,967 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:35,968 INFO L146 ILogger]: CoverageRelationStatistics Valid=211, Invalid=1349, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:35,968 INFO L146 ILogger]: Start difference. First operand 116 states and 119 transitions. Second operand 40 states. [2019-05-23 11:26:36,213 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-05-23 11:26:38,777 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:38,778 INFO L146 ILogger]: Finished difference Result 194 states and 199 transitions. [2019-05-23 11:26:38,778 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:26:38,778 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 71 [2019-05-23 11:26:38,779 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:38,780 INFO L146 ILogger]: With dead ends: 194 [2019-05-23 11:26:38,780 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:26:38,782 INFO L146 ILogger]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=493, Invalid=3797, Unknown=0, NotChecked=0, Total=4290 [2019-05-23 11:26:38,783 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:26:38,788 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 152. [2019-05-23 11:26:38,788 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:26:38,789 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2019-05-23 11:26:38,789 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 71 [2019-05-23 11:26:38,789 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:38,789 INFO L146 ILogger]: Abstraction has 152 states and 157 transitions. [2019-05-23 11:26:38,790 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:26:38,790 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 157 transitions. [2019-05-23 11:26:38,790 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:26:38,790 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:38,791 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:38,791 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:38,791 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:38,791 INFO L146 ILogger]: Analyzing trace with hash 206343125, now seen corresponding path program 10 times [2019-05-23 11:26:38,791 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:38,792 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:38,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,792 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:38,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,797 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:38,797 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:38,798 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:38,811 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:38,824 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:38,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,826 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:26:38,827 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:39,039 INFO L146 ILogger]: Checked inductivity of 101 backedges. 34 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:39,057 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:39,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2019-05-23 11:26:39,058 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:26:39,058 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:26:39,059 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:26:39,059 INFO L146 ILogger]: Start difference. First operand 152 states and 157 transitions. Second operand 21 states. [2019-05-23 11:26:39,828 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:39,829 INFO L146 ILogger]: Finished difference Result 225 states and 232 transitions. [2019-05-23 11:26:39,829 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:26:39,829 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 76 [2019-05-23 11:26:39,829 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:39,831 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:26:39,831 INFO L146 ILogger]: Without dead ends: 212 [2019-05-23 11:26:39,832 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:39,833 INFO L146 ILogger]: Start minimizeSevpa. Operand 212 states. [2019-05-23 11:26:39,838 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 212 to 159. [2019-05-23 11:26:39,838 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:26:39,839 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 164 transitions. [2019-05-23 11:26:39,839 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 164 transitions. Word has length 76 [2019-05-23 11:26:39,839 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:39,840 INFO L146 ILogger]: Abstraction has 159 states and 164 transitions. [2019-05-23 11:26:39,840 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:26:39,840 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 164 transitions. [2019-05-23 11:26:39,841 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:26:39,841 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:39,841 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:39,841 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:39,841 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:39,841 INFO L146 ILogger]: Analyzing trace with hash -1867020935, now seen corresponding path program 11 times [2019-05-23 11:26:39,842 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:39,842 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:39,842 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,842 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:39,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,847 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:39,847 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:39,847 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:39,864 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1